"Mozilla is creating a new kind of mobile operating system that is aligned with standards-based Web technologies. The platform, called Firefox OS, consists of the Gecko HTML rendering engine, a thin hardware enablement layer built on the Linux kernel, and a user interface layer called Gaia that is implemented entirely in HTML and JavaScript. The project was first announced in 2011 with the codename Boot2Gecko. It has matured considerably since then and is expected to arrive on handsets next year. Developers who want to get a head start will be pleased to learn that Mozilla has started producing daily builds of a B2G test environment that runs on conventional desktop computers."